JPH034877B2 - - Google Patents
Info
- Publication number
- JPH034877B2 JPH034877B2 JP56177099A JP17709981A JPH034877B2 JP H034877 B2 JPH034877 B2 JP H034877B2 JP 56177099 A JP56177099 A JP 56177099A JP 17709981 A JP17709981 A JP 17709981A JP H034877 B2 JPH034877 B2 JP H034877B2
- Authority
- JP
- Japan
- Prior art keywords
- heavy water
- moderator
- poison
- temperature
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims description 62
- 239000002574 poison Substances 0.000 claims description 19
- 231100000614 poison Toxicity 0.000 claims description 19
- 238000000746 purification Methods 0.000 claims description 14
- 229910052805 deuterium Inorganic materials 0.000 claims description 11
- -1 deuterium peroxide Chemical class 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000003456 ion exchange resin Substances 0.000 description 6
- 229920003303 ion-exchange polymer Polymers 0.000 description 6
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 5
- 238000003608 radiolysis reaction Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Description
【発明の詳細な説明】
本発明は重水炉の減速材系統に係り、特に、液
体ポイズンを使用する減速材系統に適用するに好
適な重水炉の減速材系統に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a moderator system for a heavy water reactor, and particularly to a moderator system for a heavy water reactor suitable for application to a moderator system using liquid poison.
重水炉の減速材系統の従来例を第１図に示す。
カランドリアタンク１内に減速材重水を供給する
減速材系統は、ダンプタンク２、循環ポンプ３、
冷却器４、重水配分管５、ポイズン濃度制御装置
６、浄化装置７及び配管類より構成される。制御
棒案内管８の下部からカランドリアタンク１内に
流出した重水は、炉心タンク９内を上昇し炉心タ
ンク上部からオーバーフローし、オーバーフロー
管１０を通つてダンプタンク２内に入る。ダンプ
タンク２内の重水は循環ポンプ３で吸引加圧さ
れ、冷却器４で冷却された後、重水配分管５で分
配され、重水供給管１１及び制御棒案内管８を通
つて再びカランドリアタンク１内に供給される。
重水中のポイズン濃度制御及び不純物除去を行な
うため冷却器出口にバイパス系統１２が設けら
れ、ポイズン濃度制御装置６及び浄化装置７が設
置されている。ポイズン濃度制御装置６は、高濃
度のポイズン溶液を貯え系統内へ供給するポイズ
ン供給装置と系統内のポイズン濃度を下げるポイ
ズン除去装置より成り、ポイズン除去装置にはイ
オン交換樹脂が使用されている。また浄化装置７
にもイオン交換樹脂が使用されているが、重水温
度が最高約70℃と低いため、カランドリアタンク
内で重水の放射線分解により生じた過酸化重水素
が、分解されないままポイズン除去装置及び浄化
装置７に入り、装置内のイオン交換樹脂が劣化す
る恐れがあつた。 A conventional example of a moderator system for a heavy water reactor is shown in Figure 1.
The moderator system that supplies moderator heavy water into the calandria tank 1 includes a dump tank 2, a circulation pump 3,
It is composed of a cooler 4, a heavy water distribution pipe 5, a poison concentration control device 6, a purification device 7, and piping. Heavy water flowing out into the calandria tank 1 from the lower part of the control rod guide tube 8 rises in the core tank 9, overflows from the upper part of the core tank, and enters the dump tank 2 through the overflow pipe 10. The heavy water in the dump tank 2 is sucked and pressurized by the circulation pump 3, cooled by the cooler 4, distributed by the heavy water distribution pipe 5, passed through the heavy water supply pipe 11 and the control rod guide pipe 8, and then returned to the calandria tank. Supplied within 1.
In order to control the concentration of poison in heavy water and remove impurities, a bypass system 12 is provided at the outlet of the cooler, and a poison concentration control device 6 and a purification device 7 are installed. The poison concentration control device 6 consists of a poison supply device that stores a highly concentrated poison solution and supplies it into the system, and a poison removal device that lowers the poison concentration in the system, and an ion exchange resin is used in the poison removal device. In addition, the purification device 7
Ion exchange resins are also used in these systems, but because the temperature of heavy water is as low as a maximum of approximately 70°C, deuterium peroxide produced by radiolysis of heavy water in the calandria tank remains undecomposed and is used in poison removal equipment and purification equipment. 7, and there was a risk that the ion exchange resin inside the device would deteriorate.
本発明の目的は、放射線分解により生じた過酸
化重水素のポイズン除去装置及び浄化装置への流
入を防止し、イオン交換樹脂の劣化を防止しうる
重水炉の減速材系統を提供するにある。 An object of the present invention is to provide a moderator system for a heavy water reactor that can prevent deuterium peroxide generated by radiolysis from flowing into a poison removal device and a purification device, and can prevent deterioration of an ion exchange resin.
本発明は、カランドリアタンク内で放射線の照
射を受けて過酸化重水素を生じた重水を過酸化重
水素を分解する温度まで加熱して、加熱された重
水をポイズン濃度制御装置または浄化装置の少な
くとも一方に導く系統を備えたものである。 The present invention heats heavy water that has been irradiated with radiation to produce deuterium peroxide in a calandria tank to a temperature that decomposes deuterium peroxide, and then uses the heated heavy water to control a poison concentration control device or a purification device. It is equipped with a system that leads to at least one direction.
本発明の重水炉の減速材系統の一実施例を第２
図に示す。本実施例は、ポイズン除去装置６及び
浄化装置７に流入する重水を90〜120℃以上に加
熱し過酸化重水素を分解するため、バイパス系統
１２内かつポイズン除去装置及び浄化装置の上流
側に加熱器１３を設けたものである。加熱容量を
低減するためパイパス系統は冷却器入口から分岐
させている。165MWeクラスの重水炉において、
パイパス流量は20m3／ｈ程度であるから、70℃の
重水を120℃まで加熱するに要する熱量は1.2MW
程度であり、一次系（炉浄化系、給水系、主蒸気
系）、補助蒸気系統からの高温流体１４を熱源と
して利用することにより対処可能である。 A second embodiment of the moderator system for a heavy water reactor according to the present invention is described below.
As shown in the figure. In this embodiment, in order to heat the heavy water flowing into the poison removal device 6 and the purification device 7 to 90 to 120°C or higher to decompose deuterium peroxide, the A heater 13 is provided. To reduce heating capacity, the bypass system is branched from the cooler inlet. In a 165MWe class heavy water reactor,
Since the bypass flow rate is about 20m 3 /h, the amount of heat required to heat heavy water at 70℃ to 120℃ is 1.2MW.
This can be dealt with by using the high temperature fluid 14 from the primary system (furnace purification system, water supply system, main steam system) and auxiliary steam system as a heat source.
尚、第２図では、ポイズン除去装置及び浄化装
置に耐熱型イオン交換樹脂を使用するものとして
加熱器の下流に冷却装置は設けていない。 In FIG. 2, a heat-resistant ion exchange resin is used in the poison removal device and the purification device, and no cooling device is provided downstream of the heater.
第２図では、加熱器を使つてポイズン除去装置
及び浄化装置に流入する重水を加熱し、重水中の
過酸化重水素を分解したが、重水系の運転温度を
上げ、カランドリアタンク出口の重水温度を90〜
120℃にして過酸化重水素を分解させることもで
きる。カランドリアタンクのカバーガス圧力を従
来と同じ0.2Kg／cm2ｇのまま、温度を上げるとカ
ランドリアタンク内で局部的な沸騰を生じ冷却材
としての働きに問題を生じるが、カバーガス圧力
を0.5〜1.0Kg／cm2ｇ程度まで上げれば、沸騰を防
ぐことができる。カバーガス圧力を0.3〜0.8Kg／
cm2増加することは構造上十分実現しうる。 In Figure 2, a heater was used to heat the heavy water flowing into the poison removal equipment and purification equipment to decompose deuterium peroxide in the heavy water. Temperature 90~
Deuterium peroxide can also be decomposed at 120°C. If the calandria tank's cover gas pressure remains the same as before, 0.2 kg/cm 2 g, and the temperature is increased, local boiling will occur in the calandria tank, causing problems with its function as a coolant. Boiling can be prevented by increasing the amount to about 0.5 to 1.0 kg/cm 2 g. Cover gas pressure 0.3~0.8Kg/
An increase in cm 2 can be realized structurally.
本発明によれば、カランドリアタンク内で重水
の放射線分解により生じた過酸化重水素が、ポイ
ズン除去装置及び浄化装置へ流入するのを防止で
きるので、装置内のイオン交換樹脂の劣化を防止
できるという効果がある。 According to the present invention, deuterium peroxide generated by radiolysis of heavy water in the calandria tank can be prevented from flowing into the poison removal device and the purification device, so deterioration of the ion exchange resin in the device can be prevented. There is an effect.
第１図は、重水炉の減速材系統の従来例を示す
系統図、第２図は、本発明の重水炉の減速材系統
の一実施例を示す系統図である。
１…カランドリアタンク、６…ポイズン濃度制
御装置、７…浄化装置。
FIG. 1 is a system diagram showing a conventional moderator system for a heavy water reactor, and FIG. 2 is a system diagram showing an embodiment of the moderator system for a heavy water reactor according to the present invention. 1...Calandria tank, 6...Poison concentration control device, 7...Purification device.
Claims (1)
て過酸化重水素を生じた重水を過酸化重水素を分
解する温度まで加熱して、加熱された重水をポイ
ズン濃度制御装置または浄化装置の少なくとも一
方に導く系統を備えた重水炉の減速材系統。 ２ 特許請求の範囲の第１項において、前記重水
を加熱する手段はカランドリアタンクからポイン
ズ濃度制御装置または浄化装置の少なくとも一方
に導く系統の途中に設けた加熱器であり、その加
熱器の熱源は炉浄化系または給水系または主蒸気
系または補助蒸気系の少なくとも一系統からの流
体であることを特徴とする重水炉の減速材系統。 ３ 特許請求の範囲の第１項において、前記重水
の温度はカランドリアタンク出口において過酸化
重水素を分解する温度であることを特徴とする重
水炉の減速材系統。[Claims] 1. Heavy water that has been irradiated with radiation to produce deuterium peroxide in a calandria tank is heated to a temperature that decomposes deuterium peroxide, and the heated heavy water is heated to a poison concentration control device or A heavy water reactor moderator system with a system leading to at least one of the purifiers. 2. In claim 1, the means for heating the heavy water is a heater provided in a system leading from the calandria tank to at least one of the Poins concentration control device or the purification device, and the heat source of the heater A moderator system for a heavy water reactor, characterized in that the fluid is from at least one of a reactor purification system, a water supply system, a main steam system, and an auxiliary steam system. 3. The moderator system for a heavy water reactor according to claim 1, wherein the temperature of the heavy water is a temperature at which deuterium peroxide is decomposed at the outlet of a calandria tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56177099A JPS5879186A (en) | 1981-11-06 | 1981-11-06 | Moderator system of heavy water reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56177099A JPS5879186A (en) | 1981-11-06 | 1981-11-06 | Moderator system of heavy water reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5879186A JPS5879186A (en) | 1983-05-12 |
| JPH034877B2 true JPH034877B2 (en) | 1991-01-24 |
Family
ID=16025118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56177099A Granted JPS5879186A (en) | 1981-11-06 | 1981-11-06 | Moderator system of heavy water reactor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5879186A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2544426B2 (en) * | 1988-02-15 | 1996-10-16 | 株式会社日立製作所 | Fluid purification device |
-
1981
- 1981-11-06 JP JP56177099A patent/JPS5879186A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5879186A (en) | 1983-05-12 |
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